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Question
The world’s lightest substance produced by China called
Options:
A .  Carbon Aero
B .  None of these
C .  Carbon Aerogel
D .  Carbon Aerosol
Answer: Option C
Answer: (c)The world’s lightest substance has been developed by Chinese scientists of Zhejiang University - Carbon aerogel that has a density of only one sixth of that of the air. Its density is only 0.16 mg/cubic centimetre, less than previously recorded lightest substance, graphite aerogel.

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